/* * Copyright 2008 Advanced Micro Devices, Inc. * Copyright 2008 Red Hat Inc. * Copyright 2009 Jerome Glisse. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Authors: Dave Airlie * Alex Deucher * Jerome Glisse
*/
if (rdev->px_quirk_flags & RADEON_PX_QUIRK_DISABLE_PX)
rdev->flags &= ~RADEON_IS_PX;
/* disable PX is the system doesn't support dGPU power control or hybrid gfx */ if (!radeon_is_atpx_hybrid() &&
!radeon_has_atpx_dgpu_power_cntl())
rdev->flags &= ~RADEON_IS_PX;
}
/** * radeon_program_register_sequence - program an array of registers. * * @rdev: radeon_device pointer * @registers: pointer to the register array * @array_size: size of the register array * * Programs an array or registers with and and or masks. * This is a helper for setting golden registers.
*/ void radeon_program_register_sequence(struct radeon_device *rdev, const u32 *registers, const u32 array_size)
{
u32 tmp, reg, and_mask, or_mask; int i;
if (array_size % 3) return;
for (i = 0; i < array_size; i +=3) {
reg = registers[i + 0];
and_mask = registers[i + 1];
or_mask = registers[i + 2];
/* FIXME: check this out */ if (rdev->family < CHIP_R300) {
rdev->scratch.num_reg = 5;
} else {
rdev->scratch.num_reg = 7;
}
rdev->scratch.reg_base = RADEON_SCRATCH_REG0; for (i = 0; i < rdev->scratch.num_reg; i++) {
rdev->scratch.free[i] = true;
rdev->scratch.reg[i] = rdev->scratch.reg_base + (i * 4);
}
}
/** * radeon_scratch_get - Allocate a scratch register * * @rdev: radeon_device pointer * @reg: scratch register mmio offset * * Allocate a CP scratch register for use by the driver (all asics). * Returns 0 on success or -EINVAL on failure.
*/ int radeon_scratch_get(struct radeon_device *rdev, uint32_t *reg)
{ int i;
for (i = 0; i < rdev->scratch.num_reg; i++) { if (rdev->scratch.free[i]) {
rdev->scratch.free[i] = false;
*reg = rdev->scratch.reg[i]; return 0;
}
} return -EINVAL;
}
/** * radeon_scratch_free - Free a scratch register * * @rdev: radeon_device pointer * @reg: scratch register mmio offset * * Free a CP scratch register allocated for use by the driver (all asics)
*/ void radeon_scratch_free(struct radeon_device *rdev, uint32_t reg)
{ int i;
for (i = 0; i < rdev->scratch.num_reg; i++) { if (rdev->scratch.reg[i] == reg) {
rdev->scratch.free[i] = true; return;
}
}
}
/** * radeon_doorbell_get - Allocate a doorbell entry * * @rdev: radeon_device pointer * @doorbell: doorbell index * * Allocate a doorbell for use by the driver (all asics). * Returns 0 on success or -EINVAL on failure.
*/ int radeon_doorbell_get(struct radeon_device *rdev, u32 *doorbell)
{ unsignedlong offset = find_first_zero_bit(rdev->doorbell.used, rdev->doorbell.num_doorbells); if (offset < rdev->doorbell.num_doorbells) {
__set_bit(offset, rdev->doorbell.used);
*doorbell = offset; return 0;
} else { return -EINVAL;
}
}
/** * radeon_doorbell_free - Free a doorbell entry * * @rdev: radeon_device pointer * @doorbell: doorbell index * * Free a doorbell allocated for use by the driver (all asics)
*/ void radeon_doorbell_free(struct radeon_device *rdev, u32 doorbell)
{ if (doorbell < rdev->doorbell.num_doorbells)
__clear_bit(doorbell, rdev->doorbell.used);
}
/* * radeon_wb_*() * Writeback is the method by which the GPU updates special pages * in memory with the status of certain GPU events (fences, ring pointers, * etc.).
*/
/** * radeon_wb_fini - Disable Writeback and free memory * * @rdev: radeon_device pointer * * Disables Writeback and frees the Writeback memory (all asics). * Used at driver shutdown.
*/ void radeon_wb_fini(struct radeon_device *rdev)
{
radeon_wb_disable(rdev); if (rdev->wb.wb_obj) { if (!radeon_bo_reserve(rdev->wb.wb_obj, false)) {
radeon_bo_kunmap(rdev->wb.wb_obj);
radeon_bo_unpin(rdev->wb.wb_obj);
radeon_bo_unreserve(rdev->wb.wb_obj);
}
radeon_bo_unref(&rdev->wb.wb_obj);
rdev->wb.wb = NULL;
rdev->wb.wb_obj = NULL;
}
}
/** * radeon_wb_init- Init Writeback driver info and allocate memory * * @rdev: radeon_device pointer * * Disables Writeback and frees the Writeback memory (all asics). * Used at driver startup. * Returns 0 on success or an -error on failure.
*/ int radeon_wb_init(struct radeon_device *rdev)
{ int r;
if (rdev->wb.wb_obj == NULL) {
r = radeon_bo_create(rdev, RADEON_GPU_PAGE_SIZE, PAGE_SIZE, true,
RADEON_GEM_DOMAIN_GTT, 0, NULL, NULL,
&rdev->wb.wb_obj); if (r) {
dev_warn(rdev->dev, "(%d) create WB bo failed\n", r); return r;
}
r = radeon_bo_reserve(rdev->wb.wb_obj, false); if (unlikely(r != 0)) {
radeon_wb_fini(rdev); return r;
}
r = radeon_bo_pin(rdev->wb.wb_obj, RADEON_GEM_DOMAIN_GTT,
&rdev->wb.gpu_addr); if (r) {
radeon_bo_unreserve(rdev->wb.wb_obj);
dev_warn(rdev->dev, "(%d) pin WB bo failed\n", r);
radeon_wb_fini(rdev); return r;
}
r = radeon_bo_kmap(rdev->wb.wb_obj, (void **)&rdev->wb.wb);
radeon_bo_unreserve(rdev->wb.wb_obj); if (r) {
dev_warn(rdev->dev, "(%d) map WB bo failed\n", r);
radeon_wb_fini(rdev); return r;
}
}
/* clear wb memory */
memset((char *)rdev->wb.wb, 0, RADEON_GPU_PAGE_SIZE); /* disable event_write fences */
rdev->wb.use_event = false; /* disabled via module param */ if (radeon_no_wb == 1) {
rdev->wb.enabled = false;
} else { if (rdev->flags & RADEON_IS_AGP) { /* often unreliable on AGP */
rdev->wb.enabled = false;
} elseif (rdev->family < CHIP_R300) { /* often unreliable on pre-r300 */
rdev->wb.enabled = false;
} else {
rdev->wb.enabled = true; /* event_write fences are only available on r600+ */ if (rdev->family >= CHIP_R600) {
rdev->wb.use_event = true;
}
}
} /* always use writeback/events on NI, APUs */ if (rdev->family >= CHIP_PALM) {
rdev->wb.enabled = true;
rdev->wb.use_event = true;
}
/** * radeon_vram_location - try to find VRAM location * @rdev: radeon device structure holding all necessary informations * @mc: memory controller structure holding memory informations * @base: base address at which to put VRAM * * Function will try to place VRAM at base address provided * as parameter (which is so far either PCI aperture address or * for IGP TOM base address). * * If there is not enough space to fit the unvisible VRAM in the 32bits * address space then we limit the VRAM size to the aperture. * * If we are using AGP and if the AGP aperture doesn't allow us to have * room for all the VRAM than we restrict the VRAM to the PCI aperture * size and print a warning. * * This function will never fails, worst case are limiting VRAM. * * Note: GTT start, end, size should be initialized before calling this * function on AGP platform. * * Note 1: We don't explicitly enforce VRAM start to be aligned on VRAM size, * this shouldn't be a problem as we are using the PCI aperture as a reference. * Otherwise this would be needed for rv280, all r3xx, and all r4xx, but * not IGP. * * Note 2: we use mc_vram_size as on some board we need to program the mc to * cover the whole aperture even if VRAM size is inferior to aperture size * Novell bug 204882 + along with lots of ubuntu ones * * Note 3: when limiting vram it's safe to overwritte real_vram_size because * we are not in case where real_vram_size is inferior to mc_vram_size (ie * not affected by bogus hw of Novell bug 204882 + along with lots of ubuntu * ones) * * Note 4: IGP TOM addr should be the same as the aperture addr, we don't * explicitly check for that thought. * * FIXME: when reducing VRAM size align new size on power of 2.
*/ void radeon_vram_location(struct radeon_device *rdev, struct radeon_mc *mc, u64 base)
{
uint64_t limit = (uint64_t)radeon_vram_limit << 20;
/** * radeon_gtt_location - try to find GTT location * @rdev: radeon device structure holding all necessary informations * @mc: memory controller structure holding memory informations * * Function will try to place GTT before or after VRAM. * * If GTT size is bigger than space left then we ajust GTT size. * Thus function will never fails. * * FIXME: when reducing GTT size align new size on power of 2.
*/ void radeon_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc)
{
u64 size_af, size_bf;
/* * radeon_device_is_virtual - check if we are running is a virtual environment * * Check if the asic has been passed through to a VM (all asics). * Used at driver startup. * Returns true if virtual or false if not.
*/ bool radeon_device_is_virtual(void)
{ #ifdef CONFIG_X86 return boot_cpu_has(X86_FEATURE_HYPERVISOR); #else returnfalse; #endif
}
/** * radeon_card_posted - check if the hw has already been initialized * * @rdev: radeon_device pointer * * Check if the asic has been initialized (all asics). * Used at driver startup. * Returns true if initialized or false if not.
*/ bool radeon_card_posted(struct radeon_device *rdev)
{
uint32_t reg;
/* for pass through, always force asic_init for CI */ if (rdev->family >= CHIP_BONAIRE &&
radeon_device_is_virtual()) returnfalse;
/* required for EFI mode on macbook2,1 which uses an r5xx asic */ if (efi_enabled(EFI_BOOT) &&
(rdev->pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE) &&
(rdev->family < CHIP_R600)) returnfalse;
check_memsize: /* then check MEM_SIZE, in case the crtcs are off */ if (rdev->family >= CHIP_R600)
reg = RREG32(R600_CONFIG_MEMSIZE); else
reg = RREG32(RADEON_CONFIG_MEMSIZE);
if (reg) returntrue;
returnfalse;
}
/** * radeon_update_bandwidth_info - update display bandwidth params * * @rdev: radeon_device pointer * * Used when sclk/mclk are switched or display modes are set. * params are used to calculate display watermarks (all asics)
*/ void radeon_update_bandwidth_info(struct radeon_device *rdev)
{
fixed20_12 a;
u32 sclk = rdev->pm.current_sclk;
u32 mclk = rdev->pm.current_mclk;
/** * radeon_boot_test_post_card - check and possibly initialize the hw * * @rdev: radeon_device pointer * * Check if the asic is initialized and if not, attempt to initialize * it (all asics). * Returns true if initialized or false if not.
*/ bool radeon_boot_test_post_card(struct radeon_device *rdev)
{ if (radeon_card_posted(rdev)) returntrue;
if (rdev->bios) {
DRM_INFO("GPU not posted. posting now...\n"); if (rdev->is_atom_bios)
atom_asic_init(rdev->mode_info.atom_context); else
radeon_combios_asic_init(rdev_to_drm(rdev)); returntrue;
} else {
dev_err(rdev->dev, "Card not posted and no BIOS - ignoring\n"); returnfalse;
}
}
/** * radeon_dummy_page_init - init dummy page used by the driver * * @rdev: radeon_device pointer * * Allocate the dummy page used by the driver (all asics). * This dummy page is used by the driver as a filler for gart entries * when pages are taken out of the GART * Returns 0 on sucess, -ENOMEM on failure.
*/ int radeon_dummy_page_init(struct radeon_device *rdev)
{ if (rdev->dummy_page.page) return 0;
rdev->dummy_page.page = alloc_page(GFP_DMA32 | GFP_KERNEL | __GFP_ZERO); if (rdev->dummy_page.page == NULL) return -ENOMEM;
rdev->dummy_page.addr = dma_map_page(&rdev->pdev->dev, rdev->dummy_page.page,
0, PAGE_SIZE, DMA_BIDIRECTIONAL); if (dma_mapping_error(&rdev->pdev->dev, rdev->dummy_page.addr)) {
dev_err(&rdev->pdev->dev, "Failed to DMA MAP the dummy page\n");
__free_page(rdev->dummy_page.page);
rdev->dummy_page.page = NULL; return -ENOMEM;
}
rdev->dummy_page.entry = radeon_gart_get_page_entry(rdev->dummy_page.addr,
RADEON_GART_PAGE_DUMMY); return 0;
}
/** * radeon_dummy_page_fini - free dummy page used by the driver * * @rdev: radeon_device pointer * * Frees the dummy page used by the driver (all asics).
*/ void radeon_dummy_page_fini(struct radeon_device *rdev)
{ if (rdev->dummy_page.page == NULL) return;
dma_unmap_page(&rdev->pdev->dev, rdev->dummy_page.addr, PAGE_SIZE,
DMA_BIDIRECTIONAL);
__free_page(rdev->dummy_page.page);
rdev->dummy_page.page = NULL;
}
/* ATOM accessor methods */ /* * ATOM is an interpreted byte code stored in tables in the vbios. The * driver registers callbacks to access registers and the interpreter * in the driver parses the tables and executes then to program specific * actions (set display modes, asic init, etc.). See radeon_atombios.c, * atombios.h, and atom.c
*/
/** * cail_pll_read - read PLL register * * @info: atom card_info pointer * @reg: PLL register offset * * Provides a PLL register accessor for the atom interpreter (r4xx+). * Returns the value of the PLL register.
*/ static uint32_t cail_pll_read(struct card_info *info, uint32_t reg)
{ struct radeon_device *rdev = info->dev->dev_private;
uint32_t r;
r = rdev->pll_rreg(rdev, reg); return r;
}
/** * cail_pll_write - write PLL register * * @info: atom card_info pointer * @reg: PLL register offset * @val: value to write to the pll register * * Provides a PLL register accessor for the atom interpreter (r4xx+).
*/ staticvoid cail_pll_write(struct card_info *info, uint32_t reg, uint32_t val)
{ struct radeon_device *rdev = info->dev->dev_private;
rdev->pll_wreg(rdev, reg, val);
}
/** * cail_mc_read - read MC (Memory Controller) register * * @info: atom card_info pointer * @reg: MC register offset * * Provides an MC register accessor for the atom interpreter (r4xx+). * Returns the value of the MC register.
*/ static uint32_t cail_mc_read(struct card_info *info, uint32_t reg)
{ struct radeon_device *rdev = info->dev->dev_private;
uint32_t r;
r = rdev->mc_rreg(rdev, reg); return r;
}
/** * cail_mc_write - write MC (Memory Controller) register * * @info: atom card_info pointer * @reg: MC register offset * @val: value to write to the pll register * * Provides a MC register accessor for the atom interpreter (r4xx+).
*/ staticvoid cail_mc_write(struct card_info *info, uint32_t reg, uint32_t val)
{ struct radeon_device *rdev = info->dev->dev_private;
rdev->mc_wreg(rdev, reg, val);
}
/** * cail_reg_write - write MMIO register * * @info: atom card_info pointer * @reg: MMIO register offset * @val: value to write to the pll register * * Provides a MMIO register accessor for the atom interpreter (r4xx+).
*/ staticvoid cail_reg_write(struct card_info *info, uint32_t reg, uint32_t val)
{ struct radeon_device *rdev = info->dev->dev_private;
WREG32(reg*4, val);
}
/** * cail_reg_read - read MMIO register * * @info: atom card_info pointer * @reg: MMIO register offset * * Provides an MMIO register accessor for the atom interpreter (r4xx+). * Returns the value of the MMIO register.
*/ static uint32_t cail_reg_read(struct card_info *info, uint32_t reg)
{ struct radeon_device *rdev = info->dev->dev_private;
uint32_t r;
r = RREG32(reg*4); return r;
}
/** * cail_ioreg_write - write IO register * * @info: atom card_info pointer * @reg: IO register offset * @val: value to write to the pll register * * Provides a IO register accessor for the atom interpreter (r4xx+).
*/ staticvoid cail_ioreg_write(struct card_info *info, uint32_t reg, uint32_t val)
{ struct radeon_device *rdev = info->dev->dev_private;
WREG32_IO(reg*4, val);
}
/** * cail_ioreg_read - read IO register * * @info: atom card_info pointer * @reg: IO register offset * * Provides an IO register accessor for the atom interpreter (r4xx+). * Returns the value of the IO register.
*/ static uint32_t cail_ioreg_read(struct card_info *info, uint32_t reg)
{ struct radeon_device *rdev = info->dev->dev_private;
uint32_t r;
r = RREG32_IO(reg*4); return r;
}
/** * radeon_atombios_init - init the driver info and callbacks for atombios * * @rdev: radeon_device pointer * * Initializes the driver info and register access callbacks for the * ATOM interpreter (r4xx+). * Returns 0 on sucess, -ENOMEM on failure. * Called at driver startup.
*/ int radeon_atombios_init(struct radeon_device *rdev)
{ struct card_info *atom_card_info =
kzalloc(sizeof(struct card_info), GFP_KERNEL);
if (!atom_card_info) return -ENOMEM;
rdev->mode_info.atom_card_info = atom_card_info;
atom_card_info->dev = rdev_to_drm(rdev);
atom_card_info->reg_read = cail_reg_read;
atom_card_info->reg_write = cail_reg_write; /* needed for iio ops */ if (rdev->rio_mem) {
atom_card_info->ioreg_read = cail_ioreg_read;
atom_card_info->ioreg_write = cail_ioreg_write;
} else {
DRM_ERROR("Unable to find PCI I/O BAR; using MMIO for ATOM IIO\n");
atom_card_info->ioreg_read = cail_reg_read;
atom_card_info->ioreg_write = cail_reg_write;
}
atom_card_info->mc_read = cail_mc_read;
atom_card_info->mc_write = cail_mc_write;
atom_card_info->pll_read = cail_pll_read;
atom_card_info->pll_write = cail_pll_write;
/** * radeon_atombios_fini - free the driver info and callbacks for atombios * * @rdev: radeon_device pointer * * Frees the driver info and register access callbacks for the ATOM * interpreter (r4xx+). * Called at driver shutdown.
*/ void radeon_atombios_fini(struct radeon_device *rdev)
{ if (rdev->mode_info.atom_context) {
kfree(rdev->mode_info.atom_context->scratch);
kfree(rdev->mode_info.atom_context->iio);
}
kfree(rdev->mode_info.atom_context);
rdev->mode_info.atom_context = NULL;
kfree(rdev->mode_info.atom_card_info);
rdev->mode_info.atom_card_info = NULL;
}
/* COMBIOS */ /* * COMBIOS is the bios format prior to ATOM. It provides * command tables similar to ATOM, but doesn't have a unified * parser. See radeon_combios.c
*/
/** * radeon_combios_init - init the driver info for combios * * @rdev: radeon_device pointer * * Initializes the driver info for combios (r1xx-r3xx). * Returns 0 on sucess. * Called at driver startup.
*/ int radeon_combios_init(struct radeon_device *rdev)
{
radeon_combios_initialize_bios_scratch_regs(rdev_to_drm(rdev)); return 0;
}
/** * radeon_combios_fini - free the driver info for combios * * @rdev: radeon_device pointer * * Frees the driver info for combios (r1xx-r3xx). * Called at driver shutdown.
*/ void radeon_combios_fini(struct radeon_device *rdev)
{
}
/* if we get transitioned to only one device, take VGA back */ /** * radeon_vga_set_decode - enable/disable vga decode * * @pdev: PCI device * @state: enable/disable vga decode * * Enable/disable vga decode (all asics). * Returns VGA resource flags.
*/ staticunsignedint radeon_vga_set_decode(struct pci_dev *pdev, bool state)
{ struct drm_device *dev = pci_get_drvdata(pdev); struct radeon_device *rdev = dev->dev_private;
radeon_vga_set_state(rdev, state); if (state) return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM; else return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
}
/** * radeon_gart_size_auto - Determine a sensible default GART size * according to ASIC family. * * @family: ASIC family name
*/ staticint radeon_gart_size_auto(enum radeon_family family)
{ /* default to a larger gart size on newer asics */ if (family >= CHIP_TAHITI) return 2048; elseif (family >= CHIP_RV770) return 1024; else return 512;
}
/** * radeon_check_arguments - validate module params * * @rdev: radeon_device pointer * * Validates certain module parameters and updates * the associated values used by the driver (all asics).
*/ staticvoid radeon_check_arguments(struct radeon_device *rdev)
{ /* vramlimit must be a power of two */ if (radeon_vram_limit != 0 && !is_power_of_2(radeon_vram_limit)) {
dev_warn(rdev->dev, "vram limit (%d) must be a power of 2\n",
radeon_vram_limit);
radeon_vram_limit = 0;
}
if (radeon_gart_size == -1) {
radeon_gart_size = radeon_gart_size_auto(rdev->family);
} /* gtt size must be power of two and greater or equal to 32M */ if (radeon_gart_size < 32) {
dev_warn(rdev->dev, "gart size (%d) too small\n",
radeon_gart_size);
radeon_gart_size = radeon_gart_size_auto(rdev->family);
} elseif (!is_power_of_2(radeon_gart_size)) {
dev_warn(rdev->dev, "gart size (%d) must be a power of 2\n",
radeon_gart_size);
radeon_gart_size = radeon_gart_size_auto(rdev->family);
}
rdev->mc.gtt_size = (uint64_t)radeon_gart_size << 20;
/* AGP mode can only be -1, 1, 2, 4, 8 */ switch (radeon_agpmode) { case -1: case 0: case 1: case 2: case 4: case 8: break; default:
dev_warn(rdev->dev, "invalid AGP mode %d (valid mode: " "-1, 0, 1, 2, 4, 8)\n", radeon_agpmode);
radeon_agpmode = 0; break;
}
if (!is_power_of_2(radeon_vm_size)) {
dev_warn(rdev->dev, "VM size (%d) must be a power of 2\n",
radeon_vm_size);
radeon_vm_size = 4;
}
if (radeon_vm_size < 1) {
dev_warn(rdev->dev, "VM size (%d) too small, min is 1GB\n",
radeon_vm_size);
radeon_vm_size = 4;
}
/* * Max GPUVM size for Cayman, SI and CI are 40 bits.
*/ if (radeon_vm_size > 1024) {
dev_warn(rdev->dev, "VM size (%d) too large, max is 1TB\n",
radeon_vm_size);
radeon_vm_size = 4;
}
/* defines number of bits in page table versus page directory, * a page is 4KB so we have 12 bits offset, minimum 9 bits in the
* page table and the remaining bits are in the page directory */ if (radeon_vm_block_size == -1) {
/* Total bits covered by PD + PTs */ unsigned bits = ilog2(radeon_vm_size) + 18;
/* Make sure the PD is 4K in size up to 8GB address space.
Above that split equal between PD and PTs */ if (radeon_vm_size <= 8)
radeon_vm_block_size = bits - 9; else
radeon_vm_block_size = (bits + 3) / 2;
/** * radeon_switcheroo_set_state - set switcheroo state * * @pdev: pci dev pointer * @state: vga_switcheroo state * * Callback for the switcheroo driver. Suspends or resumes * the asics before or after it is powered up using ACPI methods.
*/ staticvoid radeon_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state)
{ struct drm_device *dev = pci_get_drvdata(pdev);
if (radeon_is_px(dev) && state == VGA_SWITCHEROO_OFF) return;
if (state == VGA_SWITCHEROO_ON) {
pr_info("radeon: switched on\n"); /* don't suspend or resume card normally */
dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
/** * radeon_switcheroo_can_switch - see if switcheroo state can change * * @pdev: pci dev pointer * * Callback for the switcheroo driver. Check of the switcheroo * state can be changed. * Returns true if the state can be changed, false if not.
*/ staticbool radeon_switcheroo_can_switch(struct pci_dev *pdev)
{ struct drm_device *dev = pci_get_drvdata(pdev);
/* * FIXME: open_count is protected by drm_global_mutex but that would lead to * locking inversion with the driver load path. And the access here is * completely racy anyway. So don't bother with locking for now.
*/ return atomic_read(&dev->open_count) == 0;
}
/** * radeon_device_init - initialize the driver * * @rdev: radeon_device pointer * @ddev: drm dev pointer * @pdev: pci dev pointer * @flags: driver flags * * Initializes the driver info and hw (all asics). * Returns 0 for success or an error on failure. * Called at driver startup.
*/ int radeon_device_init(struct radeon_device *rdev, struct drm_device *ddev, struct pci_dev *pdev,
uint32_t flags)
{ int r, i; int dma_bits; bool runtime = false;
rdev->shutdown = false;
rdev->flags = flags;
rdev->family = flags & RADEON_FAMILY_MASK;
rdev->is_atom_bios = false;
rdev->usec_timeout = RADEON_MAX_USEC_TIMEOUT;
rdev->mc.gtt_size = 512 * 1024 * 1024;
rdev->accel_working = false; /* set up ring ids */ for (i = 0; i < RADEON_NUM_RINGS; i++) {
rdev->ring[i].idx = i;
}
rdev->fence_context = dma_fence_context_alloc(RADEON_NUM_RINGS);
/* mutex initialization are all done here so we
* can recall function without having locking issues */
mutex_init(&rdev->ring_lock);
mutex_init(&rdev->dc_hw_i2c_mutex);
atomic_set(&rdev->ih.lock, 0);
mutex_init(&rdev->gem.mutex);
mutex_init(&rdev->pm.mutex);
mutex_init(&rdev->gpu_clock_mutex);
mutex_init(&rdev->srbm_mutex);
mutex_init(&rdev->audio.component_mutex);
init_rwsem(&rdev->pm.mclk_lock);
init_rwsem(&rdev->exclusive_lock);
init_waitqueue_head(&rdev->irq.vblank_queue);
r = radeon_gem_init(rdev); if (r) return r;
radeon_check_arguments(rdev); /* Adjust VM size here. * Max GPUVM size for cayman+ is 40 bits.
*/
rdev->vm_manager.max_pfn = radeon_vm_size << 18;
/* Set asic functions */
r = radeon_asic_init(rdev); if (r) return r;
/* all of the newer IGP chips have an internal gart * However some rs4xx report as AGP, so remove that here.
*/ if ((rdev->family >= CHIP_RS400) &&
(rdev->flags & RADEON_IS_IGP)) {
rdev->flags &= ~RADEON_IS_AGP;
}
/* Set the internal MC address mask * This is the max address of the GPU's * internal address space.
*/ if (rdev->family >= CHIP_CAYMAN)
rdev->mc.mc_mask = 0xffffffffffULL; /* 40 bit MC */ elseif (rdev->family >= CHIP_CEDAR)
rdev->mc.mc_mask = 0xfffffffffULL; /* 36 bit MC */ else
rdev->mc.mc_mask = 0xffffffffULL; /* 32 bit MC */
/* set DMA mask. * PCIE - can handle 40-bits. * IGP - can handle 40-bits * AGP - generally dma32 is safest * PCI - dma32 for legacy pci gart, 40 bits on newer asics
*/
dma_bits = 40; if (rdev->flags & RADEON_IS_AGP)
dma_bits = 32; if ((rdev->flags & RADEON_IS_PCI) &&
(rdev->family <= CHIP_RS740))
dma_bits = 32; #ifdef CONFIG_PPC64 if (rdev->family == CHIP_CEDAR)
dma_bits = 32; #endif
r = dma_set_mask_and_coherent(&rdev->pdev->dev, DMA_BIT_MASK(dma_bits)); if (r) {
pr_warn("radeon: No suitable DMA available\n"); return r;
}
rdev->need_swiotlb = drm_need_swiotlb(dma_bits);
/* doorbell bar mapping */ if (rdev->family >= CHIP_BONAIRE)
radeon_doorbell_init(rdev);
/* io port mapping */ for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { if (pci_resource_flags(rdev->pdev, i) & IORESOURCE_IO) {
rdev->rio_mem_size = pci_resource_len(rdev->pdev, i);
rdev->rio_mem = pci_iomap(rdev->pdev, i, rdev->rio_mem_size); break;
}
} if (rdev->rio_mem == NULL)
DRM_ERROR("Unable to find PCI I/O BAR\n");
if (rdev->flags & RADEON_IS_PX)
radeon_device_handle_px_quirks(rdev);
/* if we have > 1 VGA cards, then disable the radeon VGA resources */ /* this will fail for cards that aren't VGA class devices, just
* ignore it */
vga_client_register(rdev->pdev, radeon_vga_set_decode);
if (rdev->flags & RADEON_IS_PX)
runtime = true; if (!pci_is_thunderbolt_attached(rdev->pdev))
vga_switcheroo_register_client(rdev->pdev,
&radeon_switcheroo_ops, runtime); if (runtime)
vga_switcheroo_init_domain_pm_ops(rdev->dev, &rdev->vga_pm_domain);
r = radeon_init(rdev); if (r) goto failed;
radeon_gem_debugfs_init(rdev);
if (rdev->flags & RADEON_IS_AGP && !rdev->accel_working) { /* Acceleration not working on AGP card try again * with fallback to PCI or PCIE GART
*/
radeon_asic_reset(rdev);
radeon_fini(rdev);
radeon_agp_disable(rdev);
r = radeon_init(rdev); if (r) goto failed;
}
radeon_audio_component_init(rdev);
r = radeon_ib_ring_tests(rdev); if (r)
DRM_ERROR("ib ring test failed (%d).\n", r);
/* * Turks/Thames GPU will freeze whole laptop if DPM is not restarted * after the CP ring have chew one packet at least. Hence here we stop * and restart DPM after the radeon_ib_ring_tests().
*/ if (rdev->pm.dpm_enabled &&
(rdev->pm.pm_method == PM_METHOD_DPM) &&
(rdev->family == CHIP_TURKS) &&
(rdev->flags & RADEON_IS_MOBILITY)) {
mutex_lock(&rdev->pm.mutex);
radeon_dpm_disable(rdev);
radeon_dpm_enable(rdev);
mutex_unlock(&rdev->pm.mutex);
}
if ((radeon_testing & 1)) { if (rdev->accel_working)
radeon_test_moves(rdev); else
DRM_INFO("radeon: acceleration disabled, skipping move tests\n");
} if ((radeon_testing & 2)) { if (rdev->accel_working)
radeon_test_syncing(rdev); else
DRM_INFO("radeon: acceleration disabled, skipping sync tests\n");
} if (radeon_benchmarking) { if (rdev->accel_working)
radeon_benchmark(rdev, radeon_benchmarking); else
DRM_INFO("radeon: acceleration disabled, skipping benchmarks\n");
} return 0;
failed: /* balance pm_runtime_get_sync() in radeon_driver_unload_kms() */ if (radeon_is_px(ddev))
pm_runtime_put_noidle(ddev->dev); if (runtime)
vga_switcheroo_fini_domain_pm_ops(rdev->dev); return r;
}
/** * radeon_device_fini - tear down the driver * * @rdev: radeon_device pointer * * Tear down the driver info (all asics). * Called at driver shutdown.
*/ void radeon_device_fini(struct radeon_device *rdev)
{
DRM_INFO("radeon: finishing device.\n");
rdev->shutdown = true; /* evict vram memory */
radeon_bo_evict_vram(rdev);
radeon_audio_component_fini(rdev);
radeon_fini(rdev); if (!pci_is_thunderbolt_attached(rdev->pdev))
vga_switcheroo_unregister_client(rdev->pdev); if (rdev->flags & RADEON_IS_PX)
vga_switcheroo_fini_domain_pm_ops(rdev->dev);
vga_client_unregister(rdev->pdev); if (rdev->rio_mem)
pci_iounmap(rdev->pdev, rdev->rio_mem);
rdev->rio_mem = NULL;
iounmap(rdev->rmmio);
rdev->rmmio = NULL; if (rdev->family >= CHIP_BONAIRE)
radeon_doorbell_fini(rdev);
}
/* * Suspend & resume.
*/ /* * radeon_suspend_kms - initiate device suspend * * Puts the hw in the suspend state (all asics). * Returns 0 for success or an error on failure. * Called at driver suspend.
*/ int radeon_suspend_kms(struct drm_device *dev, bool suspend, bool notify_clients, bool freeze)
{ struct radeon_device *rdev; struct pci_dev *pdev; struct drm_crtc *crtc; struct drm_connector *connector; int i, r;
/* wait for gpu to finish processing current batch */ for (i = 0; i < RADEON_NUM_RINGS; i++) {
r = radeon_fence_wait_empty(rdev, i); if (r) { /* delay GPU reset to resume */
radeon_fence_driver_force_completion(rdev, i);
} else { /* finish executing delayed work */
flush_delayed_work(&rdev->fence_drv[i].lockup_work);
}
}
radeon_save_bios_scratch_regs(rdev);
radeon_suspend(rdev);
radeon_hpd_fini(rdev); /* evict remaining vram memory * This second call to evict vram is to evict the gart page table * using the CPU.
*/
radeon_bo_evict_vram(rdev);
radeon_agp_suspend(rdev);
pci_save_state(pdev); if (freeze && rdev->family >= CHIP_CEDAR && !(rdev->flags & RADEON_IS_IGP)) {
rdev->asic->asic_reset(rdev, true);
pci_restore_state(pdev);
} elseif (suspend) { /* Shut down the device */
pci_disable_device(pdev);
pci_set_power_state(pdev, PCI_D3hot);
}
if (notify_clients)
drm_client_dev_suspend(dev, false);
return 0;
}
/* * radeon_resume_kms - initiate device resume * * Bring the hw back to operating state (all asics). * Returns 0 for success or an error on failure. * Called at driver resume.
*/ int radeon_resume_kms(struct drm_device *dev, bool resume, bool notify_clients)
{ struct drm_connector *connector; struct radeon_device *rdev = dev->dev_private; struct pci_dev *pdev = to_pci_dev(dev->dev); struct drm_crtc *crtc; int r;
if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) return 0;
if (resume) {
pci_set_power_state(pdev, PCI_D0);
pci_restore_state(pdev); if (pci_enable_device(pdev)) return -1;
} /* resume AGP if in use */
radeon_agp_resume(rdev);
radeon_resume(rdev);
r = radeon_ib_ring_tests(rdev); if (r)
DRM_ERROR("ib ring test failed (%d).\n", r);
if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled) { /* do dpm late init */
r = radeon_pm_late_init(rdev); if (r) {
rdev->pm.dpm_enabled = false;
DRM_ERROR("radeon_pm_late_init failed, disabling dpm\n");
}
} else { /* resume old pm late */
radeon_pm_resume(rdev);
}
if (radeon_crtc->cursor_bo) { struct radeon_bo *robj = gem_to_radeon_bo(radeon_crtc->cursor_bo);
r = radeon_bo_reserve(robj, false); if (r == 0) { /* Only 27 bit offset for legacy cursor */
r = radeon_bo_pin_restricted(robj,
RADEON_GEM_DOMAIN_VRAM,
ASIC_IS_AVIVO(rdev) ?
0 : 1 << 27,
&radeon_crtc->cursor_addr); if (r != 0)
DRM_ERROR("Failed to pin cursor BO (%d)\n", r);
radeon_bo_unreserve(robj);
}
}
}
/* init dig PHYs, disp eng pll */ if (rdev->is_atom_bios) {
radeon_atom_encoder_init(rdev);
radeon_atom_disp_eng_pll_init(rdev); /* turn on the BL */ if (rdev->mode_info.bl_encoder) {
u8 bl_level = radeon_get_backlight_level(rdev,
rdev->mode_info.bl_encoder);
radeon_set_backlight_level(rdev, rdev->mode_info.bl_encoder,
bl_level);
}
} /* reset hpd state */
radeon_hpd_init(rdev); /* blat the mode back in */ if (notify_clients) {
drm_helper_resume_force_mode(dev); /* turn on display hw */
drm_modeset_lock_all(dev);
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
}
drm_modeset_unlock_all(dev);
}
drm_kms_helper_poll_enable(dev);
/* set the power state here in case we are a PX system or headless */ if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled)
radeon_pm_compute_clocks(rdev);
if (notify_clients)
drm_client_dev_resume(dev, false);
return 0;
}
/** * radeon_gpu_reset - reset the asic * * @rdev: radeon device pointer * * Attempt the reset the GPU if it has hung (all asics). * Returns 0 for success or an error on failure.
*/ int radeon_gpu_reset(struct radeon_device *rdev)
{ unsigned ring_sizes[RADEON_NUM_RINGS];
uint32_t *ring_data[RADEON_NUM_RINGS];
bool saved = false;
int i, r;
down_write(&rdev->exclusive_lock);
if (!rdev->needs_reset) {
up_write(&rdev->exclusive_lock); return 0;
}
for (i = 0; i < RADEON_NUM_RINGS; ++i) {
ring_sizes[i] = radeon_ring_backup(rdev, &rdev->ring[i],
&ring_data[i]); if (ring_sizes[i]) {
saved = true;
dev_info(rdev->dev, "Saved %d dwords of commands " "on ring %d.\n", ring_sizes[i], i);
}
}
r = radeon_asic_reset(rdev); if (!r) {
dev_info(rdev->dev, "GPU reset succeeded, trying to resume\n");
radeon_resume(rdev);
}
radeon_restore_bios_scratch_regs(rdev);
for (i = 0; i < RADEON_NUM_RINGS; ++i) { if (!r && ring_data[i]) {
radeon_ring_restore(rdev, &rdev->ring[i],
ring_sizes[i], ring_data[i]);
} else {
radeon_fence_driver_force_completion(rdev, i);
kfree(ring_data[i]);
}
}
if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled) { /* do dpm late init */
r = radeon_pm_late_init(rdev); if (r) {
rdev->pm.dpm_enabled = false;
DRM_ERROR("radeon_pm_late_init failed, disabling dpm\n");
}
} else { /* resume old pm late */
radeon_pm_resume(rdev);
}
/* init dig PHYs, disp eng pll */ if (rdev->is_atom_bios) {
radeon_atom_encoder_init(rdev);
radeon_atom_disp_eng_pll_init(rdev); /* turn on the BL */ if (rdev->mode_info.bl_encoder) {
u8 bl_level = radeon_get_backlight_level(rdev,
rdev->mode_info.bl_encoder);
radeon_set_backlight_level(rdev, rdev->mode_info.bl_encoder,
bl_level);
}
} /* reset hpd state */
radeon_hpd_init(rdev);
rdev->in_reset = true;
rdev->needs_reset = false;
downgrade_write(&rdev->exclusive_lock);
drm_helper_resume_force_mode(rdev_to_drm(rdev));
/* set the power state here in case we are a PX system or headless */ if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled)
radeon_pm_compute_clocks(rdev);
if (!r) {
r = radeon_ib_ring_tests(rdev); if (r && saved)
r = -EAGAIN;
} else { /* bad news, how to tell it to userspace ? */
dev_info(rdev->dev, "GPU reset failed\n");
}
rdev->needs_reset = r == -EAGAIN;
rdev->in_reset = false;
up_read(&rdev->exclusive_lock); return r;
}
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